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Finding the Fourth Proportional to 90,238.63, 135,491.00 and 50,335.58

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Solution

The fourth proportional to 90,238.63, 135,491.00 and 50,335.58 is: 75,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,238.63 : 135,491.00 = 50,335.58 : x
  2. Step 2: Convert to fraction form
    90,238.63/135,491.00 = 50,335.58/x
  3. Step 3: Cross multiply
    90,238.63x = 135,491.00 × 50,335.58
  4. Step 4: Simplify right side
    90,238.63x = 6,820,017,819.40
  5. Step 5: Solve for x
    x = 6,820,017,819.40/90,238.63
  6. Step 6: Final answer
    x = 75,577.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.